The combination of non-destructive methods of concrete testing

The article discusses the issues of combining several methods of non-destructive concrete strength testing. A necessary condition for effective integrationи of physically different methods is the possession of the property of complementarity. Combining several non-destructive testing techniques can not only improve the accuracy of concrete strength estimation in situ, but also improve information tests by expanding the list of tested concrete parameters, in particular, its elasticity modulus. Data of field tests show that an acceptable accuracy check of concrete strength of common strength class can be obtained on the basis of standardized test methods without correction procedure of their calibration dependencies.